The San Diego Chargers on Wednesday added a run-stopping outside linebacker to their 3-4 defense. According to a Twitter post from the team's official website, Jarret Johnson agreed to join the Chargers with a four-year deal.

Johnson, who turns 31 in August, had been with the Baltimore Ravens since he was selected in the fourth round of the 2003 NFL draft from Alabama. He has been an invaluable, steady producer for a variety of defensive coordinators, most recently Chuck Pagano. The Chargers hired Pagano's brother, John, to coordinate their scheme in January.

Although Johnson has never been to a Pro Bowl, he filled his role well, starting every game for the Ravens the past five seasons. He had 294 tackles and 17 sacks in that span. He is 6-3, 260 pounds.